Hfonc.e00 (helminthiasis filariid onchocerca volvulus) is an ARC/INFO
interchange file. The file can only be used with Geographic Information
System (GIS) software, such as ARC/INFO, the file's native format, or by
importing it into another GIS software package.

Hfonc.e00 was digitized from a paper map. The source of which is:
"Distribution of Helminthiases: Atlas of Diseases ? Plate 4." The
American Geographical Society. The Geographical Review, Vol. 42, No. 1,
1952.

This GIS data was created as part of The Center for International
Development?s ongoing research into the role of geography in economic
development (see www.cid.harvard.edu/economic.htm)
<http://www.cid.harvard.edu/cidglobal/economic.htm>. It was created
between 1998 and 1999. Please reference CID if you use this data in a
publication.

